[OE-core] Fix for the APIC hangs in qemux86-64

[Bruce Ashfield]

On 2017-12-13 7:04 PM, Richard Purdie wrote:
> On Wed, 2017-12-13 at 19:01 -0500, Bruce Ashfield wrote:
>> On 2017-12-13 9:14 AM, Richard Purdie wrote:
>>>
>>> On Wed, 2017-12-13 at 09:07 -0500, Bruce Ashfield wrote:
>>>>
>>>> On 12/13/2017 09:05 AM, Richard Purdie wrote:
>>>>>
>>>>>
>>>>> On Wed, 2017-12-13 at 08:38 -0500, Bruce Ashfield wrote:
>>>>>>
>>>>>>
>>>>>> On 12/13/2017 07:34 AM, Richard Purdie wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Hi Bruce,
>>>>>>>
>>>>>>> https://bugzilla.yoctoproject.org/show_bug.cgi?id=12301
>>>>>>>
>>>>>>> We've root caused the hangs we're seeing in qemux86-64 on
>>>>>>> our
>>>>>>> autobuilder workers. We've identified a commit on 4.15-rc3
>>>>>>> which
>>>>>>> fixes
>>>>>>> the issue but backporting it to the autobuilder's host
>>>>>>> kernels
>>>>>>> will
>>>>>>> be
>>>>>>> a pain.
>>>>>>>
>>>>>>> As a workaround I'd like to enable x2apic on qemux86-64.
>>>>>>> Since
>>>>>>> that
>>>>>>> works via MSRs it avoids the problem.
>>>>>>>
>>>>>>> Would it be a big issue to set CONFIG_X86_X2APIC=y for
>>>>>>> qemux86-
>>>>>>> 64?
>>>>>> Nope. No big deal at all. I've used the same config i the
>>>>>> past
>>>>>> when doing work with rt-KVM, so I know it well.
>>>>>>
>>>>>> I'll prep a commit, and send it along as part of a rebased
>>>>>> set
>>>>>> of kernel patches.
>>>>> Thanks, much appreciated.
>>>>>
>>>>> Did we get to the bottom of the 4.12 selftest failures?
>>>>>
>>>> Not yet no. I was distracted for a day, but need to learn how
>>>> to run them myself. I was able to log in via serial in my normal
>>>> boot flow, so that didn't get me anywhere.
>>>>
>>>> Is the selftest HOWO in the yocto docs ? I'll google it up this
>>>> morning.
>>> No HOWTO but I did give you the command. In a poky checkout run:
>>>
>>> oe-selftest -r runqemu.RunqemuTests.test_boot_deploy
>>>
>>> which runs a single test that fails (setup DL_DIR/SSTATE_MIRRORS
>>> first
>>> to speed it up a bit).
>>>
>>> It may tell you to clear SANITY_TESTED_DISTROS, I think it auto
>>> adds
>>> meta-selftest now. You may also need to set DISPLAY to something
>>> (e.g.
>>> a dummy vncserver).
>>>
>> With the cleanup that Ross gave me, I'm now able to see the issue.
>>
>> I'll start debugging on Thursday.
>>
>> One additional question: what's the right way to find the logs of
>> that
>> run ?
>>
>> I'm getting a bit of noise from:
>>
>> ----------------
>>        0155:            else:
>> Exception: FileNotFoundError: [Errno 2] No such file or directory:
>> '/home/bruce/poky/build/tmp/sysroots-components/x86_64/python3-
>> native/usr/lib/python3.5/sqlite3/__pycache__/dump.cpython-35.opt-
>> 1.pyc'
>> ->
>> '/home/bruce/poky/build/tmp/work/core2-64-poky-linux/gnu-efi/3.0.6-
>> r0/recipe-sysroot-
>> native/usr/lib/python3.5/sqlite3/__pycache__/dump.cpython-35.opt-
>> 1.pyc'
>>
>> ERROR: gnu-efi-3.0.6-r0 do_package: Function failed:
>> extend_recipe_sysroot
>> ERROR: Logfile of failure stored in:
>> /home/bruce/poky/build/tmp/work/core2-64-poky-linux/gnu-efi/3.0.6-
>> r0/temp/log.do_package.10495
> 
> You've deleted pyc files from python itself which is bad. I'd
> cleansstate python-native and rebuilt it to fix that. Ross meant onto
> to run it on the poky meta directory...

Yah. I clued into that right as I hit send. I'll see if I can save the
build now :D

Bruce

> 
> Cheers,
> 
> Richard
> 
>